'BAPI_CONTRACT_CREATEFROMDATA' Characteristic Value Assignment

Hello Experts

I got a requirement where I need to create load program for contracts, then assign equipments and characteristic to the material in contracts. I am using BAPI 'BAPI_CONTRACT_CREATEFROMDATA' for this. Contract is getting created and equipment assignment is also happening. Only part left is to assign characteristics to material in contract

Table CONTRACT_CFGS_VALUE is provided in BAPI for this, does anyone knows how to pass the values to CONFIG_ID and INST_ID of this table .I tried different combinations but assignment is not happening in the contract. Any help will be appreciated.

Thanks,

Harkamal